Vulnerability advisory
GHSA-8h28-f46f-m87h
Insecure Deserialization in TYPO3 CMS
Severity
Severity not reported.
Affected versions
typo3/cms Packagist
All typo3/cms advisories →| Affected | Fixed in |
|---|---|
8.5.0 to before 8.7.17 | 8.7.17Advisories → |
9.0.0 to before 9.3.2 | 9.3.2Advisories → |
Description
It has been discovered that the Form Framework (system extension "form") is vulnerable to Insecure Deserialization when being used with the additional PHP PECL package “yaml”, which is capable of unserializing YAML contents to PHP objects. A valid backend user account as well as having PHP setting "yaml.decode_php" enabled is needed to exploit this vulnerability (which is the default value according to PHP documentation).